When I was a vegetarian (NOT vegan. I still ate eggs and drank milk) I ate very healthily. Physically I felt great. But, I felt like shit emotionally. My moods were all over the place, I would go on random crying jags that would last for half hour to an hour. I would become absolutely irate for no reason and go on tangents. Mostly though, I was terribly depressed. This went on for about three months until a friend pushed me to eat meat again. I felt almost immediately better. Our bodies cannot produce the B6 and B12 vitamins found in meat. Symptoms of vitamin B deficiency include depression, amongst other hazardous things. Plus, meat just tastes fucking great. Meat is good for you if you eat it responsibly. Of course, if your only source of meat is McDonald's, you're gonna feel shitty. That's not even meat anyway. Now, please, pass me a drumstick.
I love meat. Eating meat is fine, just know where your getting it from like buy local. I know people don't eat for spiritual/ religious purposes and that is extremely commendable. I'm just not eating meat because I need to get fit, haha. Being a vegan is awesome, eating meat is awesome. Just don't shove your ideals and beliefs down my throat and critisize me for my choices, please and thank you.